import java.awt.Color;
import java.io.FileOutputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map; import com.lowagie.text.*;
import com.lowagie.text.rtf.RtfWriter2;
/**
* 数据库文档生成器 Oracle版
* itext-2.1.7.jar
* itext-rtf-2.1.7.jar
* @author cuiyj
*
*/
public class GenerateTableDoc {
//键类型字典
private static Map<String,String> keyType = new HashMap<String,String>();
//需要导出的目标表
private static List<String> targetTable = new ArrayList<String>();
static{
targetTable.add("COMMON_ADDRESS");//表名
targetTable.add("L_USER");
}
//初始化jdbc
static{
try {
keyType.put("ID", "主键");
// keyType.put("C", "Check");
Class.forName("oracle.jdbc.OracleDriver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
//private static String url = "";//链接url
private static String url = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";//链接url
private static String username = "user"; //用户名.需要设置默认表空间哈
private static String password = "user"; //密码
private static String schema = "USER"; //目标数据库名
//查询所有表的sql语句
private static String sql_get_all_tables = "select a.TABLE_NAME,b.COMMENTS from user_tables a,user_tab_comments b WHERE a.TABLE_NAME=b.TABLE_NAME order by TABLE_NAME"; //查询所有字段的sql语句
private static String sql_get_all_columns = "select T1.column_name,T1.data_type,T1.data_length,t2.comments,T1.NULLABLE,(select max(constraint_type) from user_constraints x left join user_cons_columns y on x.constraint_name=y.constraint_name where x.table_name=t1.TABLE_NAME and y.COLUMN_NAME=T1.column_name) from user_tab_cols t1, user_col_comments t2, user_tab_comments t3 where t1.TABLE_NAME=t2.table_name(+) and t1.COLUMN_NAME=t2.column_name(+) and t1.TABLE_NAME=t3.table_name(+) and t1.TABLE_NAME='{table_name}' order by T1.COLUMN_ID ";
public static void main(String[] args) throws Exception {
//初始化word文档
Document document = new Document(PageSize.A4);
RtfWriter2.getInstance(document,new FileOutputStream("E:/word.doc"));
document.open();
//查询开始
Connection conn = getConnection();
//获取所有表
List tables = getDataBySQL(sql_get_all_tables,conn);
int i=1;
for (Iterator iterator = tables.iterator(); iterator.hasNext();) {
String [] arr = (String []) iterator.next();
//循环获取字段信息
String tableName = arr[0];
if(targetTable.contains(tableName)){
System.out.print(i+".正在处理数据表-----------"+arr[0]);
addTableMetaData(document,arr,i);
List columns = getDataBySQL(sql_get_all_columns.replace("{table_name}", arr[0]),conn);
addTableDetail(document,columns);
addBlank(document);
System.out.println("...done");
i++;
}
}
document.close();
conn.close();
}
/**
* 添加一个空行
* @param document
* @throws Exception
*/
public static void addBlank(Document document)throws Exception{
Paragraph ph = new Paragraph("");
ph.setAlignment(Paragraph.ALIGN_LEFT);
document.add(ph);
}
/**
* 添加包含字段详细信息的表格
* @param document
* @param arr1
* @param columns
* @throws Exception
*/
public static void addTableDetail(Document document,List columns)throws Exception{
Table table = new Table(6);
table.setWidth(100f);
table.setBorderWidth(1);
table.setBorderColor(Color.BLACK);
table.setPadding(0);
table.setSpacing(0);
Cell cell1 = new Cell("序号");// 单元格
cell1.setHeader(true); Cell cell2 = new Cell("列名");// 单元格
cell2.setHeader(true); Cell cell3 = new Cell("类型");// 单元格
cell3.setHeader(true); Cell cell4 = new Cell("长度");// 单元格
cell4.setHeader(true); Cell cell5 = new Cell("键");// 单元格
cell5.setHeader(true); Cell cell6 = new Cell("说明");// 单元格
cell6.setHeader(true);
//设置表头格式
table.setWidths(new float[]{8f,30f,15f,8f,10f,29f});
cell1.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell1.setBackgroundColor(Color.gray);
cell2.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell2.setBackgroundColor(Color.gray);
cell3.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell3.setBackgroundColor(Color.gray);
cell4.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell4.setBackgroundColor(Color.gray);
cell5.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell5.setBackgroundColor(Color.gray);
cell6.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell6.setBackgroundColor(Color.gray);
table.addCell(cell1);
table.addCell(cell2);
table.addCell(cell3);
table.addCell(cell4);
table.addCell(cell5);
table.addCell(cell6);
table.endHeaders();// 表头结束
int x = 1;
for (Iterator iterator = columns.iterator(); iterator.hasNext();) {
String [] arr2 = (String []) iterator.next();
Cell c1 = new Cell(x+"");
Cell c2 = new Cell(arr2[0]);
Cell c3 = new Cell(arr2[1]);
Cell c4 = new Cell(arr2[2]); String key = keyType.get(arr2[5]);
if(key==null)key = "";
Cell c5 = new Cell(key);
Cell c6 = new Cell(arr2[3]);
c1.setHorizontalAlignment(Cell.ALIGN_CENTER);
c2.setHorizontalAlignment(Cell.ALIGN_CENTER);
c3.setHorizontalAlignment(Cell.ALIGN_CENTER);
c4.setHorizontalAlignment(Cell.ALIGN_CENTER);
c5.setHorizontalAlignment(Cell.ALIGN_CENTER);
c6.setHorizontalAlignment(Cell.ALIGN_CENTER);
table.addCell(c1);
table.addCell(c2);
table.addCell(c3);
table.addCell(c4);
table.addCell(c5);
table.addCell(c6);
x++;
}
document.add(table);
}
/**
* 增加表概要信息
* @param dcument
* @param arr
* @param i
* @throws Exception
*/
public static void addTableMetaData(Document dcument,String [] arr,int i) throws Exception{
Paragraph ph = new Paragraph(i+". 表名: "+arr[0]+" 说明: "+(arr[1]==null?"":arr[1]));
ph.setAlignment(Paragraph.ALIGN_LEFT);
dcument.add(ph);
}
/**
* 把SQL语句查询出列表
* @param sql
* @param conn
* @return
*/
public static List getDataBySQL(String sql,Connection conn){
Statement stmt = null;
ResultSet rs = null;
List list = new ArrayList();
try {
stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
while(rs.next()){
String [] arr = new String[rs.getMetaData().getColumnCount()];
for(int i=0;i<arr.length;i++){
arr[i] = rs.getString(i+1);
}
list.add(arr);
}
} catch (SQLException e) {
e.printStackTrace();
}finally{
try {
if(rs!=null)rs.close();
if(stmt!=null)stmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
return list;
}
/**
* 获取数据库连接
* @return
*/
public static Connection getConnection(){
try {
return DriverManager.getConnection(url, username, password);
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
}
------ 这是相关依赖
<dependency>
<groupId>com.lowagie</groupId>
<artifactId>itext</artifactId>
<version>2.1.7</version>
</dependency>
<dependency>
<groupId>com.lowagie</groupId>
<artifactId>itext-rtf</artifactId>
<version>2.1.7</version>
</dependency>